Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_TYPING_ASM_H_ |
| 6 | #define V8_TYPING_ASM_H_ |
| 7 | |
| 8 | #include "src/allocation.h" |
| 9 | #include "src/ast/ast.h" |
| 10 | #include "src/effects.h" |
| 11 | #include "src/type-info.h" |
| 12 | #include "src/types.h" |
| 13 | #include "src/zone.h" |
| 14 | |
| 15 | namespace v8 { |
| 16 | namespace internal { |
| 17 | |
| 18 | class TypeCache; |
| 19 | |
| 20 | class AsmTyper : public AstVisitor { |
| 21 | public: |
| 22 | explicit AsmTyper(Isolate* isolate, Zone* zone, Script* script, |
| 23 | FunctionLiteral* root); |
| 24 | bool Validate(); |
| 25 | void set_allow_simd(bool simd); |
| 26 | const char* error_message() { return error_message_; } |
| 27 | |
| 28 | enum StandardMember { |
| 29 | kNone = 0, |
| 30 | kStdlib, |
| 31 | kInfinity, |
| 32 | kNaN, |
| 33 | kMathAcos, |
| 34 | kMathAsin, |
| 35 | kMathAtan, |
| 36 | kMathCos, |
| 37 | kMathSin, |
| 38 | kMathTan, |
| 39 | kMathExp, |
| 40 | kMathLog, |
| 41 | kMathCeil, |
| 42 | kMathFloor, |
| 43 | kMathSqrt, |
| 44 | kMathAbs, |
| 45 | kMathMin, |
| 46 | kMathMax, |
| 47 | kMathAtan2, |
| 48 | kMathPow, |
| 49 | kMathImul, |
| 50 | kMathFround, |
| 51 | kMathE, |
| 52 | kMathLN10, |
| 53 | kMathLN2, |
| 54 | kMathLOG2E, |
| 55 | kMathLOG10E, |
| 56 | kMathPI, |
| 57 | kMathSQRT1_2, |
| 58 | kMathSQRT2, |
| 59 | }; |
| 60 | |
| 61 | StandardMember VariableAsStandardMember(Variable* variable); |
| 62 | |
| 63 | DEFINE_AST_VISITOR_SUBCLASS_MEMBERS(); |
| 64 | |
| 65 | private: |
| 66 | Zone* zone_; |
| 67 | Isolate* isolate_; |
| 68 | Script* script_; |
| 69 | FunctionLiteral* root_; |
| 70 | bool valid_; |
| 71 | bool allow_simd_; |
| 72 | |
| 73 | struct VariableInfo : public ZoneObject { |
| 74 | Type* type; |
| 75 | bool is_check_function; |
| 76 | bool is_constructor_function; |
| 77 | StandardMember standard_member; |
| 78 | |
| 79 | VariableInfo() |
| 80 | : type(NULL), |
| 81 | is_check_function(false), |
| 82 | is_constructor_function(false), |
| 83 | standard_member(kNone) {} |
| 84 | explicit VariableInfo(Type* t) |
| 85 | : type(t), |
| 86 | is_check_function(false), |
| 87 | is_constructor_function(false), |
| 88 | standard_member(kNone) {} |
| 89 | }; |
| 90 | |
| 91 | // Information for bi-directional typing with a cap on nesting depth. |
| 92 | Type* expected_type_; |
| 93 | Type* computed_type_; |
| 94 | VariableInfo* property_info_; |
| 95 | int intish_; // How many ops we've gone without a x|0. |
| 96 | |
| 97 | Type* return_type_; // Return type of last function. |
| 98 | size_t array_size_; // Array size of last ArrayLiteral. |
| 99 | |
| 100 | typedef ZoneMap<std::string, VariableInfo*> ObjectTypeMap; |
| 101 | ObjectTypeMap stdlib_types_; |
| 102 | ObjectTypeMap stdlib_heap_types_; |
| 103 | ObjectTypeMap stdlib_math_types_; |
| 104 | #define V(NAME, Name, name, lane_count, lane_type) \ |
| 105 | ObjectTypeMap stdlib_simd_##name##_types_; \ |
| 106 | VariableInfo* stdlib_simd_##name##_constructor_type_; |
| 107 | SIMD128_TYPES(V) |
| 108 | #undef V |
| 109 | |
| 110 | // Map from Variable* to global/local variable Type*. |
| 111 | ZoneHashMap global_variable_type_; |
| 112 | ZoneHashMap local_variable_type_; |
| 113 | |
| 114 | bool in_function_; // In module function? |
| 115 | bool building_function_tables_; |
| 116 | |
| 117 | TypeCache const& cache_; |
| 118 | |
| 119 | static const int kErrorMessageLimit = 100; |
| 120 | char error_message_[kErrorMessageLimit]; |
| 121 | |
| 122 | static const int kMaxUncombinedAdditiveSteps = 1 << 20; |
| 123 | static const int kMaxUncombinedMultiplicativeSteps = 1; |
| 124 | |
| 125 | void InitializeStdlib(); |
| 126 | void InitializeStdlibSIMD(); |
| 127 | |
| 128 | void VisitDeclarations(ZoneList<Declaration*>* d) override; |
| 129 | void VisitStatements(ZoneList<Statement*>* s) override; |
| 130 | |
| 131 | void VisitExpressionAnnotation(Expression* e, Variable* var, bool is_return); |
| 132 | void VisitFunctionAnnotation(FunctionLiteral* f); |
| 133 | void VisitAsmModule(FunctionLiteral* f); |
| 134 | |
| 135 | void VisitHeapAccess(Property* expr, bool assigning, Type* assignment_type); |
| 136 | |
| 137 | Expression* GetReceiverOfPropertyAccess(Expression* expr, const char* name); |
| 138 | bool IsMathObject(Expression* expr); |
| 139 | bool IsSIMDObject(Expression* expr); |
| 140 | bool IsSIMDTypeObject(Expression* expr, const char* name); |
| 141 | bool IsStdlibObject(Expression* expr); |
| 142 | |
| 143 | void VisitSIMDProperty(Property* expr); |
| 144 | |
| 145 | int ElementShiftSize(Type* type); |
| 146 | Type* StorageType(Type* type); |
| 147 | |
| 148 | void SetType(Variable* variable, Type* type); |
| 149 | Type* GetType(Variable* variable); |
| 150 | VariableInfo* GetVariableInfo(Variable* variable, bool setting); |
| 151 | void SetVariableInfo(Variable* variable, const VariableInfo* info); |
| 152 | |
| 153 | VariableInfo* LibType(ObjectTypeMap* map, Handle<String> name); |
| 154 | void VisitLibraryAccess(ObjectTypeMap* map, Property* expr); |
| 155 | |
| 156 | void SetResult(Expression* expr, Type* type); |
| 157 | void IntersectResult(Expression* expr, Type* type); |
| 158 | |
| 159 | void VisitWithExpectation(Expression* expr, Type* expected_type, |
| 160 | const char* msg); |
| 161 | |
| 162 | void VisitLiteral(Literal* expr, bool is_return); |
| 163 | |
| 164 | void VisitIntegerBitwiseOperator(BinaryOperation* expr, Type* left_expected, |
| 165 | Type* right_expected, Type* result_type, |
| 166 | bool conversion); |
| 167 | |
| 168 | Zone* zone() const { return zone_; } |
| 169 | |
| 170 | #define DECLARE_VISIT(type) void Visit##type(type* node) override; |
| 171 | AST_NODE_LIST(DECLARE_VISIT) |
| 172 | #undef DECLARE_VISIT |
| 173 | |
| 174 | DISALLOW_COPY_AND_ASSIGN(AsmTyper); |
| 175 | }; |
| 176 | } // namespace internal |
| 177 | } // namespace v8 |
| 178 | |
| 179 | #endif // V8_TYPING_ASM_H_ |